Doffing mechanism for flyer spinning, doubling, twisting and like machines



Sept. 15, 193 J. A. PORTER 2 74 DQFFING MECHANISM FOR FLYER SPINNING, DOUBLING,

TWISTING, AND LIKE MACHINES Filed May 22, 1929 5 Sheets-Sheet 2 INVENTOR:

Sept. l5, 1931. PORTER 1,823,374

DOFFING MECHANISM FOR FLYER SPINNING, DOUBLING,

.TWISTING, AND LIKE MACHINES Filed May 22, 1929 5 Sheets-Sheet 3 INVENTOR:

J. A. PORTER 1,823,374

DOUBLING,

Sept 15, 1931;

DOFFING MECHANISM FOR FLYER SPINNING,

TWISTING, AND LIKE MACHINES 7 Filed May 22 1929 5 Sheets-Sheet 4 1,823,374 DOFFING MECHANISM FOR FLYER SPINNING, DOUBLING,

Sept. 15, 1931. .1. A. PORTER TWISTING, AND LIKE MACHINES Filed May 22, 1929 5 Sheets-Sheet INVEN TfiR:

ATTYS.

Patented Sept. 15, 1931 STATES PATENT OFFICE aos srnfenritnn rogenitor Horn roI NnnY, LEEDS, ENGLAND, ASSIGNOR TO FAIR- YIBAIRNI' LAWSON OOMBE BARZBOUR LIMITED, or HOPE FOUNDRY, LEEDS, ENGLAND f "boFFINGMncII NIsivI me .FLYER srINNINe, noUBLINe; TWISTING AND LIKE MAoIIINEs Application filed May 22', 1929, Serial No. 364 964, and in Great Britain May 31, "1928.

In connection'with mechanical dotting apparatus for flyer spinning, doubling, twisting'and like machines, in most arrangements it is necessary (in order to afiordspace for the interchanging of the full and empty bobbins) td'cause the lifter plate to descend for aspace rather more thandouble the length of the'bobbins. To provide for this compara- "tive"ly excessive motion the framework of the machine and the positions of the spinning spindles have to be'so high that the work o'fvtheattendant' has to be carried out under disadvantages wellknown: My present invention consists in theproduction, arrangel 'mentan'd construction of devices whereby the lifter'plate with its full or empty bobbins during the dofiing process need not be brought down very much below the lower ends 'ofthe-le'gs of the flyers when the spin- 2 I; dles upon which the bobbins are mounted are fixed to'sai'd'lifter plate. By these means I am enabled to reduce the height of the operatingparts so as to renderth'e work of the attendant more easy to carry out while to the 2 said devices I am enabled to add others whereby I may secure the" readjustments of the deta-c'hedplate'and'a second supply of empty bobbins iwithout the necessity of arresting th'e "motions of the machine after same has 'bonc'e been startedinto' its spinning operations. Inthismannerthe output of the machine 'is-increased"without increasing the duties ofthe attendant; I

.. jlfi or'd r to clearly describe my invention 5 I 'h'avehereiinto'appended sheets of drawings illustrative thereof to which by figures and lettersreference ismade in the following "description i c Fig. lii'san end'elevation of portions of a spin-ning', doub1ing, twisting or like machine showing arr embodiment; of my improved mechanism" for actuating the lifter plates hereinafter 'describedand the relative positions of said lifter plates with the fiyer -niecnanism iprm machine when the bobbins are'nearlyifull and arein their highest positions. 7 f y 7 F'Figl; ,2 illustrates thefpositions into 7 .which the full'bobbiiis are moved during the first s'tep of the dofling process. I

Fig. 3 shows the positions of the full bob- 131118 and the empty bobbins when the attendant has moved them through thenext step of the dofiing operation.

Fig. at illustrates the position ofthe parts I with the empty bobbins in position for the spinning operations to re-commence.

Fig. 5 is a plan of the parts shown by Figs. 1, 2, 3 and 4.

In the drawings, I

A indicates the end frame of the'machine.

To attain the object of my invention I make use of the usual interchangeable plates 2 and 2a with their respective series of spindles fixed to them to receive the two series of bobbins 4 and 4a as heretofore employed,however in connectionwith these we now employ transporting or carrying members 3, for said lifter plates, so thatI may mount said members 3 at the proper distance below the lowest position of the lifter plates 2 and 2a when working under ordinary conditions to traverse the bobbins 4 during the building of the coils of yarn thereon.

These transporting members '3 are situated at the extreme ends of the lifter" plates 2 and 2a sothat by dividing said lifter plates into two seriesof sections I can mount the lifter rack mechanism to operate between the two ends of each pair of sections as well as at the outer ends of same, by which arrangement the actuating of the said series of lifterplates 2 and 2ais carried out with greater precision. The position of one of the lifter arms 17 is shown by Fig. 5 between the ends of the two sections of plates forming part of the series of plates 2a. 5

Each lifter plate in the series of lifter plates 2' and Qa'is supplied witha transporting member 3 at each end of it, so thatthe lateral extensions 17a and 17?) from the lifter rack 17 will pass beneath or belowthe ends of the litter plates 2 and Qa'inea'ch series as is shown by Fig. 5. I

It will be observed that the transporting members 3 have only two positi0ns,'one

where theyretain the inoperative bobbins at the front of the machine while the operative bobbins, orthose about to be putinto operation, are in alignment with the flyers and the inoperative are to the rear of those which are in alignment with the same fiyers, thus when carrying out the process of doifing in order to move the lifter plate (which has beenleft at the front of the flyers and has been.

supplied with empty bobbins after the other bobbins have been placed in position upon the other lifter plate for the winding operations to recommence) so that'said newly supplied empty bobbins onsa'id lifter plate may be brought from the front of the flyers in a position to the rear of said flyers it is essential that a separatemovement should be given to said lifter plate in addition to its ordinary movement by the transporting members 8.

Said transporting members 3 have curved slots .39 arranged to' take over runners 6 and 6a which are carried by the brackets 66.

Uponthe studs carrying said runners are loosely mountedpinions 7 and 7a andthese pinions as shown by Figs. 1, 2, 3 and 4-, are made to gear with intermediate pinions 8 and 8a which derive their motion from acentral. toothed wheel 9.

" ,This wheel 9 is fixed upon ashaft 10 so that by said shaft 10 having a worm wheel 11 also fixed upon it, this wheel 11 may be actuated by a worm 12 mounted upon a vertical shaft 13which'derives itsmotion through the bevel gears 14, 14a by means of a hand wheel 15;

7 By these means when the attendant actuates the hand wheel 15 in order to rotate the shaft 10 the wheels 9, 8 and 8a and 7 and M will also be rotated either in one direction or the other as is hereinafter explained.-

. The shaft 10 extends lengthwise the spinning frame and is arranged to actuate other sets of'wheels 9, 8, 8a and .7, 7a that are U mounted toengage with racks upon thelifter plates2 and 2a,

The transporting members 3 have a longi-' tudinal slot 3g which spans the runners 6 and 6a so that said members 3, are retained in posi- .tions as desired, and by said slot 3g being.

' curved as shown by the drawings, the bobbins 4' when moved to the front of the machine are made to occupy inclined positions as is shown by Figs. 3 and 4 of the drawings, thus facilitating the handling of said bobbins by the attendant as well as retaining them in positions clear of the flyers.

Each lifter plate,2 and 2a is provided on each of its .outer, extremities or ends with acks 16, said racks. being fixed to the lower surfaces of said plates thedrawings, I

The supporting and'transporting members 2 and 2a as is shown by I 3 have their curvedupper surfaces smooth to receive the runners mounted upon the lifter plates adjacent to theracks 16 which are upon the ends of the plates 2 and 2a; I These lifter plates 2 and 2a when brought into position'with the edge of one againstthe edge of theother as shown by Figs. 11

and 12) will snugly fit between theprojections 3w and 3% on theends of the transporting members 8. By thus abutting against said extensions an and 3% when the teeth of the rack'lG are in engagement with :one or other of the wheels of the pinions 7 or 7d said pinions are enabled to move so that said plates will carry with them the transporting mem- These will slide over'the antifrio is in the position shown byFigure 4, the

attendant will then actuate the hand wheel mechanism whereby the pinions 7, and 7a are caused to actuate the lifter plate 2 so that said lifter plate is moved from its position on the carrier 3 to its rear position over said. carrier 3' so that its edge will abut against the projection 3%. When reaching this central position the attendant willstill continue the actions of the hand wheel so' that the pinions 7, 7a will then carry the plate 2 and its transporting member 3 back to the position shown by F 2 where it is ready for the next process of dofiing to be recommencedand the can riers 8 are in their rearmost position as is shown by Fig. 2. 1

The operations of the as follows "Whenthe bobbins f have completed the winding operations so that they are ready for dofing, the attendantarrests the motion of foregoing parts are the machines and actuates the lifter rack 17 sition the lifter plates 2 will be received by and will rest upon the transportingmembers 3 as is shown by Fig. 2 while the lifter rack 17 will have descended slightly below the plate 2 in order to leave same with its rack 16 engaging with the pinions 7 and 7a.

The attendant will then actuate thehand wheel15 and thereby commence to revolve the shaft 10 so that by the gearing described the pinions 7,7a will commence-t0 revolvef and at such time the teeth of the rack 16 willhave been brought into gear with the .pinion 7 as shown by Fig; 2 and also into gear with the pinion 7a. The attendant will then'continue the rotations of the hand wheel 15 until the carrier 3 is moved from the position shown by Figs. land 2 into the position shown by Figs. 3 and 4 where the full'bobbins will have been brought tothefront of the machineand the empty bobbins 4a will have been brought again arrested and the threads w may be'then severed as is well understood.

plate 2 and replace same by empty bobbins on the same plate, after which the attendant may then actuate the hand wheel so as to return the transporting members 3 to their rear positions shown by Figs. 1 and 2 where the empty bobbins remain out of the way of the attendant until the next dofing procoss has to be carried out.

Such'being the nature of my said invention what I claim is 1; Dofiing mechanism for spinning machines and the like comprising'a plurality of detachable and interchangeable lifter plates, a pair of arcuate supporting memers for said plates having curved slots, a

pair of parallel spaced runners extending J into said slots, studs carrying said runners,

the spacing of said runners being less than the length of the slots, whereby the; supporting members are movable on said runners, and means mounted on said studs and operatively engaging a lifter plate on said members to move said plates forwardly from a horizontal position to a forwardly and downwardly sloping position.

2. Doffing mechanism for spinning machines and the like, comprising a pair of forwardly extending supporting rails mounted for limited forward and rearward movement and adapted to carry a pair of removable lifter plates one in front of the other, stops on said rails to limit the forward and rearward motion; of lifter plates thereon, and driving connections adapted to operatively engage lifter plates on said rails to move said plates forwardly and rearwardly and to move said rails by engagement of said plates against said stops.

3. Boiling mechanism for spinning machines and the like, comprising a pair of parallel runners spaced in. a substantially 1" horizontal plane, studs carrying said runners, a pair of arcuate supporting members having arcuate slots receiving said runners, said slots being approximately twice as long as the spacing between said runners, whereby said members are capableof limited forward and rearward movement on said runners, apair of lifter plates removably resting on said members, stops on said members engageable by said plates to limit forward and rearward movement of said plates on said members, driving means mounted on said studs to operatively engage a lifter plate resting on said members and to move said plate forwardly and rearwardly from an intermediate horizontal position above said shafts, said members being also movable forwardly and rearwardly on said runners by engagement of said plates against said stops.

4. In a spinning machine or the like havinga plurality of'flyers, doffing mechanism comprising a pair of parallel runners horizontally spaced beneath said fiyers, studs carrying said runners, a pair of arcuate supporting members having arcuate slots to receive said runners, said slots being about twice as long as the spacing between said runners, a pair of removable lifter plates resting on said members, each plate being movable forwardly and rearwardly on said members when the other plate is removed therefrom, stops on said members to limit the movement of said plates thereon, a gear pinion loosely mounted on each said stud, and a gear rack mounted on each said plate to engage one or the other of said pinions when the plate is on said support members, whereby rotation of said pinions may move a plate from a horizontal position beneath said flyers to a sloping delivery position in front of the machine and from said delivery posltion to a position rearward of said flyers.

JOSEPH ALFRED PORTER. 

